add voxel world runtime navmesh sidecar

Introduce a DI-wired NavMesh sidecar for voxel chunks so world streaming stays actor-driven and world state remains the canonical source for navigation rebuilds.

Assets/Scripts/Players/CameraFollow.cs

@@ -14,6 +14,8 @@ namespace Players
 
         private float _mouseOrbitAngle;
 
+        public Transform Target => _target != null ? _target : transform;
+
         public override void OnStartClient()
         {
             base.OnStartClient();